142986454 has 32 divisors (see below), whose sum is σ = 235872000. Its totient is φ = 64612512.

The previous prime is 142986449. The next prime is 142986479. The reversal of 142986454 is 454689241.

It is a self number, because there is not a number n which added to its sum of digits gives 142986454.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286297 + ... + 286795.

It is an arithmetic number, because the mean of its divisors is an integer number (7371000).

Almost surely, 2^142986454 is an apocalyptic number.

142986454 is a deficient number, since it is larger than the sum of its proper divisors (92885546).

142986454 is a wasteful number, since it uses less digits than its factorization.

142986454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724.

The product of its digits is 276480, while the sum is 43.

The square root of 142986454 is about 11957.6943429743. The cubic root of 142986454 is about 522.9156406753.

The spelling of 142986454 in words is "one hundred forty-two million, nine hundred eighty-six thousand, four hundred fifty-four".